Usually, Billion Monkey reflection photos are rather obvious, but that is special. For my rehang of this snap, I have taken the liberty of cropping in on the bit that matters.

This kind of shot is more likely to be taken by a Billion Monkey than by a Real Photographer, because a Real Photographer is less likely to have his camera with him when, randomly, he spots the shot. Billion Monkeys always have their cameras with them! Billion Monkeys are always on the look out for weird stuff!